Hey, I've noticed lately that my iPhone 4's screen (or i think) is starting to go dim after a while for no reason. The automatically adjust setting is off and the brightness is up to 100%. I can tell because the colours seem so much more dull like the white's from safari and the grey's in the app store, etc. Funny thing is, when I turn it off and back on, the screen is at full brightness again! This still happens after a restore! My warranty with Apple expired back in September '11 but I've got my carrier's warranty for the remaining contract time. Should I try and get it replaced? Any help's great! Thanks!